Filter



. lUNITE-D y vSTATES PAT-ENT f SAMSON D Av ID EISENDRATH, lon sT. PAUL,MINNEsolA.fv

.FIL-ran.

srncIFIcA'l-ion forming part pf .Letters Patent No. 604,931, dated may31, 189s.:

Application filed October 1,1897.

- Teelt whom it 11i/ay concern:

. ne it knqwn'that nsti/[SON DAVID EISEN..

D RALT'H, apitizenot't'he United States, resid.v 'ing at St.Paul,-Ramseyj county,' Minnesota,

have invented certainv new. and .useful Im.

-fprovements in Filters, 'of which the following` .is a full, clear, and.exactdescription 1 This invention-relates tewater distribution, andmore especially to faucet-filters.; and the object ofthe .same isto'produce an improved ."lilter capable of .ready application to andref-- *movalfrom a'faucet provided with proper -thefilterico'mplete 2 isa similar secthreads, and which filter is so construqteam 'Y timid-1y mithe filtering agentwin not freadtily become clogged nor shed itsparticles' into `the filtered-water receptacle.; -l

' This object l accomplish by-the'cons'tnuction set forth below andillustrated in the ac companying drawings@ whereinf-` Figure 'lis acentral vertical section through tionswith the-'parts ot the liltenslightly s ep- Referringto `the saiddrawings, the bodyv or shellof thisfilter consists-of two hollow heinispherical members, T. being the topor upper one and -B the bottom or lower..` The:

vformer has exterior-threads tarou ud its mouth fora purpose to appearvbelow and at its upper end is provided with .an inlet-aperture I,enlarged, as at T', to form a shoulder-',--andin -A teriorly threaded,-as at z', above the saine,"- whercb'y it maybe screwed onto the exteriorlth'reads'which usually occur-on the faucet now in general use inhouseholds. g is a gasket, as of leather 'or rubber, whichl iscompressed between the mouth of theffaucetand the shoulder l" when the'faucet is screwed Itightly to its support, thus preventing'leak+ age'.The lower member B is-cnp-shaped, as

` shown, andwith'in its m-outh` is provided with -threads b, adapted toengage those at the mouth of the upper member T, while just bev"ldwjthese threads is formed an-interiorshoul- /same size.

its foot rprojecting radially outward from the sereine. 653,739. (Nomau.) v-

loweredge thereof, said foot resting upon the' y 'shoulder B when inplace.

S is a-sheet or disk of silk. F isa similar -disk'of vfelt speciallyprepared for posean-d resting on the silk S.

. S is anupper silk disk resting on the this pu raround the 'upright'portion of the L-shaped ring, andl G is a rubber-.or other gasket ofthe In. .assembling v.the fabric disks are placed in a pile and laidupon 'the upper edgegof the L-shaped "ringv and the plain ring broughtdown upon their edges, soas to clamp the latter'ti htly to the felt'. Risa plain metal ring of a size to fit closely the .parts above describedLaing. Thewhole is thus-capa 1e ofteing,A f

handled readily without the. necessity of the operators hands coming invactual contact with the -fabric, because the filter proper is clampedtightly withinja metal frame consistingof the rings R and L This filteraudits -frame are then placed within the lower mem'-v ber B u'pon itsshoulder B. and the' gasket G laid upon the ring R, and, iinally, thetwo -rnembers T and B are screwed together, so

that the lower edgeot the upper member T bears Iirmly down upon thegasket G and compresses the pile of disks vand rings uponl the shoulderB' to hold them in position-and prevent leaking from .the shell'oraround the edges ofthe lilter proper. The devicc isthen attached to themou-th of the faucet in a manner which will be clear. The parts can beseparated, as for cleaning or repair, and again assembled in thismanner.

The exact size, shape, and proportion of element-s are immaterial, andsome considerable change .may be .made without departing fromthefprinciple of my invention. For instance, on'e or both silks mightsometimes be.

omitted, if preferred.

In use the water flowing in at l strikes the upper silk sheet,whcreby itis spread'out into a large Volume, so that it passes downward throughall portions of the interior rather than through one spot at thecentcronly, and, this sheet of silk also catches and holds at its edgessuch .particles of sand, dirt, and the like as will not pass through it.'lhe water next passes through the felt, and,finall y, it passes`through thc lower sheet of4 silk, which in turn prevents detachedparticles of the felt from being delivered at O. I consider both ysheetsof silk highly important for use in connection with a felt or fibroussheet F for these reasons and for the further reason that the very finemesh ofthe silk sheets permits the inflowing liquid to percolate throughall parts thereof to the fiber rather than falling thereon ateertainpoints, as it would if a perforated plate were used, and thelower silk sheet permits Athe outiiowing water also tohave a free exit,while preventing particles of the fiber Y from being detached, andtherefore'is of Agreat advantage; but they also possess the addi -tionaladvantages that the upper disk spreads the water over all parts of thechamber and delivers it evenly to all parts of the felt sheet,

while catching -particles which would otherwise injure or becomeembedded inthe felt'.

If desired, when the filter is being cleaned,

either orboth silk sheets can be simply in-L verted in place or they canbe transposed the one for, the other, with or without inversion, andthus is aio'rded a quick and ready means of cleaning the filter withoutnecessarily boiling or replacing the silk sheets, which would be themost thorough means of cleaning.

What is claimed as new is- 1. The herein-described faucet-filter, thesame comprisinga shell-like bodyin two members of substantial cup shape,the upper having an inlet and the lower an outlet, the upper havingexterior threads around its mouth,

the lower having interior threads'at its mouth" adapted to receive thoseon the upper member and also having a shoulder just below said threads,a lter proper consisting of a fab- 4 ric sheet removably clamped withina metal fr ame, lthe latter resting on said shoulder, and agasketbetween the lower edge of the upper member and the upper side of thefilter-frame, as and for the purpose set forth.

2. In a filter, the combination with a shell like body in two cup-shapedmembers detachably connected atv their open edges, one

member having a shoulder opposite the edge of the other member; ofa'filter proper consisting of two/sheets of silk with an interposedsheet of felt, said sheets being held upon said shoulder by saidedge,.as and for the purpose 'set forth.

3. In a filter, the combination with a body having inlet and' outletopenings respectively above and below; of afilterproper supported withinsuch body between the openings there-4 in and consisting of a fibroussheet with silk sheets held close againstitslopposite faces, as

,right-portion, and a fabric filter-sheet passing at its edges overtheupright portion and clamped between it andI said plain ring, the entirefilter with itsframe being held between said shoulder and said edge ofthe body meml be'rs, substantially as described.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

SAMSON DAVID EISENDRATII. Witnesses:

L. FEESER, Jr., GEO. E. SCALES.

